Having been to Africa and laid eyes on an Eland, A 150 Bt would not have been in my top five choices. Those things are huge! With that said, I ran the 140 BT in my 280 AI for a while, and had no trouble taking elk with it. I guess it just confirms that it's all about shot placement. I still think that I would have wanted a bit tougher bullet for a critter that large.